Verfahrensanalyse: Wasserstoff aus Methanol und dessen Einsatz in Brennstoffzellen für Fahrzeugantriebe

Ganser, B.

Book/Report

FZJ-2018-04194

Verfahrensanalyse: Wasserstoff aus Methanol und dessen Einsatz in Brennstoffzellen für Fahrzeugantriebe

Ganser, B. (Corresponding author)FZJ*

1993
Forschungszentrum Jülich GmbH Zentralbibliothek, Verlag Jülich

Jülich : Forschungszentrum Jülich GmbH Zentralbibliothek, Verlag, Berichte des Forschungszentrums Jülich 2748, 119 p. (1993)

Please use a persistent id in citations: http://hdl.handle.net/2128/19330

Report No.: Juel-2748

Abstract: The progress currently emerging in the optimization of low temperature fuel cells with respect to efficiency, emission behaviour and life time led to a vigorous development aimed at applying these fuel cells in motor vehicles. The proposed hydrogen supply for a low-temperature fuel cell obtained by reforming a methanollwater-mixture into a hydrogen rich synthesis gas requires a precise adjustment of the reforming unit to the fuel cell under the special operating conditions of a mobile system. On the basis of results from theoretical and experimental studies of methanol reforming, various optimization criteria and possible approaches are discussed. Considering the limited dynamic behaviour of the reformer unit it becomes obvious that an additional battery has to cover the intermittent performance requirements for a vehicle. Based on the new ECE driving cycle, all drive components of a hybrid system with methanol reformer and fuel cell are dimensioned, including all foreseeable conversion Iosses. The calculation of the driving resistance resulting from the given speed profile provides the driving energy for a specifiedpassenger car so that the emission balance of the vehicle and of the entire ener gy conversion chain from the primary energy carrier to the wheel can be estimated.Finally it is shown that, compared with conventional drive systems, the proposed hybrid system offers a similar driving performance with a much more favourable emission balance.

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